ITV Player, which offers viewers the chance to watch ITV1, ITV2, ITV3 and ITV4 programmes, up to seven days after broadcast, joins BBC iPlayer, which was made available through the service in December 2009.
ITV Player offers 100 hours of programmes each week, from soaps such as Coronation Street to entertainment shows including The X Facter.
"The launch of ITV Player on Freesat is another important landmark for us. It's fantastic that we can now offer viewers the two biggest catch-up TV services, direct to their TVs," said Freesat managing director Emma Scott.
Freesat, which was launched in May 2008, offers Brits free access to more than 140 digital TV and radio stations via a dedicated set-top box and a satellite dish.
ITV Player on Freesat will initially only be available in Beta and viewers will need a Humax Freesat HD or Humax Freesat+ digital box connected to a satellite dish and to a broadband service of at least 2 Mbps to access the service, which can be found on channel 903.
Freesat said ITV Player will become available to other Freesat HD digital boxes and Freesat HD TVs over the coming months.